I agree with VenusInFurs,
Kreuzberg is not really like many people think, specially if you are a west girl or a modern woman, (you can get sexist insults, or machist provocations, what make a girl feel really bad).
I know that because of my girlfriend, she is german, and she already had three times similar problems with muslim teenagers. Of course it doesn´t happen every day, and not all muslim teenager are the same, but it happens sometimes. Berlin is not the paradise of the tolerance that many people believe.
In my opinion, the problem is that normally we don´t know or we don´t want to know about the muslim comunity and its culure. We use to try to be "comprehensive" with them, and tolerant, even if we have no contact with them, except to enjoy the exotism of its nice vegetables shop, or turkish restaurants (the same as when we do a tourist trip around Egypt, for exemple).
It could be dramatic to ask muslim girls or boys what in his families happens, the truth is hard to hear.
We can read constantly in the newspapers about girls who are beaten by their fathers, cause they want to study something, or just becuse they want to choose their boyfriend, but as girls they has no choice to decide it. This sounds for us like terrible Middle Ages stories, but then we don´t want to criticize them because of fear of being racist.
The Western countries, (and specially Germany) are full of prejudices. We cannot criticize anyone except ourselves.
You can also find modern turkish, and muslim intelectuals (like designers, writters, film directors, etc) in Kreuzberg, but they are a very small part of the muslim society. If you go below Kreuzberg to Neukölln, the reality is a deep muslim guetto, sometimes even worse than in other muslim countries.
I was living for a long time in Madrid and London, and i´ve never seen such a untolerance as the aggressiveness of some young muslims of Kreuzberg and Neukölln. Wedding is even worse...
Why should a woman be afraid to wear a skirt or a cool dress walking alone in the underground?
Or what happen when 3 turkish teenager come to ask me: "hey german fagot! do you have a problem"?. Then i have to respond: "hey brother! It´s everything ok...".
Well, i´m afraid that´s racism against western people, and: racism against the people of the country that gave the turkish the chance to live and work here. That´s patetic
Everybody speak about the Eastern German racism, but nobody about the disaster of the turkish integration, and about the racism and intolerance of the muslim comunity.
The answer to this conflict is the integration; this is a big problem and the politicians don´t want to talk about that.
They have to make a strong integration plan, otherwise Kreuzberg and Berlin will become a hard and unhospitable city to live, same as happened in Paris or Marseille. I don´t want to be dramatic, but it becoming slowly like that. I live since 10 years here and i see it.
(Sorry for the long text)